Which is a composite number 42,29,21,37

Mathematics

1 answer:

Blizzard [7]3 years ago

3 0

Answer:

42 and 21 are composite numbers

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Find the product. (do not use spaces in your answer.)<br><br> d ^j · d ^k

bezimeni [28]

$d^j\cdot d^k=d^{j+k}$

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3 years ago

Read 2 more answers

13 - 3/2<br> Pls give an explanation

postnew [5]

13-3/2 you need to make a common denominator, so

26/2-3/2 then subtract the numerators, the denominator remains.

23/2 now simplify the fraction

11½ this is because 22/2+1/2=23/2, and 22/2=11, so 11+1/2 or 11½

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3 years ago

Y= -1/2(x+10)^2+14 Find the range

Andre45 [30]

Answer:

Step-by-step explanation:

y=-1/2(x+10)^2+14

2y=-(x+10)^2+28

(x+10)^2=28-2y

L.H.S. is positive.

so 28-2y≥0

28≥2y

or 2y≤28

or y≤ 14

Range is (-∞,14]

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3 years ago

In a group of eighteen people, each person shakes hands once with each other person in the group. How many handshakes will occur

miv72 [106K]

The number of handshakes that will occur in a group of eighteen people if each person shakes hands once with each other person in the group is 153 handshakes

In order to determine the number of handshakes that will occur among 18 people, that is, the number of ways we can choose 2 persons from 18 people.

∴ The number of handshakes = $^{18}C_{2}$